(英)异质结构金属有机框架/NaGdF4:Yb,Er纳米棒的合成及其可调上转换荧光性质 |
投稿时间:2020-05-29 修订日期:2020-12-28 点此下载全文 |
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中文摘要:多组分异质结构的纳米复合材料不仅兼有每个组分原有的性能,而且还可以通过各组分之间的相互作用产生新的化学、电子性能。本工作通过分步合成法制备了异质结构的金属有机框架/NaGdF4:Yb,Er(ZIF-67/NaGdF4:Yb,Er)复合材料,该材料可有效避免上转换(UC)纳米粒子的团聚和荧光淬灭,并且提高了荧光的稳定性。在上转换荧光中(980 nm激发),异质结构复合材料中的ZIF-67可实现能量的传递。相对于NaGdF4:Yb,Er纳米棒,由于各组分之间的协同作用,使得异质结构ZIF-67/NaGdF4:Yb,Er上转换荧光从绿光变为红光,通过结构控制实现荧光性质的调制。 |
中文关键词:异质结构 可控合成 纳米复合材料 光致发光 上转换 |
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Synthesis of the heterostructure NaGdF4:Yb,Er nanorods loaded on metal-organic frameworksand its tuning upconversion photoluminescence |
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Abstract:Multi-component heterostructure nanocomposites can not only inherit the original properties of each component, but also induce new chemical and electronic properties through the interaction between the components. The heterostructure zeolitic imidazolate framework/NaGdF4:Yb,Er (ZIF-67/NaGdF4:Yb,Er) was prepared by a stepwise synthesis strategy. And it avoided agglomeration and quenching of upconversion (UC) nanoparticles, and displayed better stability. In the heterostructure nanocomposites, ZIF-67 is employed as an energy transmission platform under 980 nm excitation. Compared to pure NaGdF4:Yb,Er nanorods, the UC photoluminescence of heterostructure ZIF-67/NaGdF4:Yb,Er is tuned from green to red owing to the synergistic effect of each component. |
keywords:heterostructure controllable synthesis nanocomposite luminancence upconversion |
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